Jan ( N = 88 )

Feb ( N = 71 )

Mar ( N = 241 )

Apr ( N = 238 )

May ( N = 241 )

Jun ( N = 186 )

Jul ( N = 190 )

Aug ( N = 204 )

Sep ( N = 226 )

Oct ( N = 232 )

Nov ( N = 160 )

Dec ( N = 248 )